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Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties

Smart hydrogels based on natural polymers present an opportunity to fabricate responsive scaffolds that provide an immediate and reversible reaction to a given stimulus. Modulation of mechanical characteristics is especially interesting in myocyte cultivation, and can be achieved by magnetically con...

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Autores principales: Vítková, Lenka, Musilová, Lenka, Achbergerová, Eva, Kolařík, Roman, Mrlík, Miroslav, Korpasová, Kateřina, Mahelová, Leona, Capáková, Zdenka, Mráček, Aleš
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9455683/
https://www.ncbi.nlm.nih.gov/pubmed/36077030
http://dx.doi.org/10.3390/ijms23179633
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author Vítková, Lenka
Musilová, Lenka
Achbergerová, Eva
Kolařík, Roman
Mrlík, Miroslav
Korpasová, Kateřina
Mahelová, Leona
Capáková, Zdenka
Mráček, Aleš
author_facet Vítková, Lenka
Musilová, Lenka
Achbergerová, Eva
Kolařík, Roman
Mrlík, Miroslav
Korpasová, Kateřina
Mahelová, Leona
Capáková, Zdenka
Mráček, Aleš
author_sort Vítková, Lenka
collection PubMed
description Smart hydrogels based on natural polymers present an opportunity to fabricate responsive scaffolds that provide an immediate and reversible reaction to a given stimulus. Modulation of mechanical characteristics is especially interesting in myocyte cultivation, and can be achieved by magnetically controlled stiffening. Here, hyaluronan hydrogels with carbonyl iron particles as a magnetic filler are prepared in a low-toxicity process. Desired mechanical behaviour is achieved using a combination of two cross-linking routes—dynamic Schiff base linkages and ionic cross-linking. We found that gelation time is greatly affected by polymer chain conformation. This factor can surpass the influence of the number of reactive sites, shortening gelation from 5 h to 20 min. Ionic cross-linking efficiency increased with the number of carboxyl groups and led to the storage modulus reaching 10 [Formula: see text] Pa compared to 10 [Formula: see text] Pa–10 [Formula: see text] Pa for gels cross-linked with only Schiff bases. Furthermore, the ability of magnetic particles to induce significant stiffening of the hydrogel through the magnetorheological effect is confirmed, as a 10 [Formula: see text]-times higher storage modulus is achieved in an external magnetic field of 842 kA·m [Formula: see text]. Finally, cytotoxicity testing confirms the ability to produce hydrogels that provide over 75% relative cell viability. Therefore, dual cross-linked hyaluronan-based magneto-responsive hydrogels present a potential material for on-demand mechanically tunable scaffolds usable in myocyte cultivation.
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spelling pubmed-94556832022-09-09 Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties Vítková, Lenka Musilová, Lenka Achbergerová, Eva Kolařík, Roman Mrlík, Miroslav Korpasová, Kateřina Mahelová, Leona Capáková, Zdenka Mráček, Aleš Int J Mol Sci Article Smart hydrogels based on natural polymers present an opportunity to fabricate responsive scaffolds that provide an immediate and reversible reaction to a given stimulus. Modulation of mechanical characteristics is especially interesting in myocyte cultivation, and can be achieved by magnetically controlled stiffening. Here, hyaluronan hydrogels with carbonyl iron particles as a magnetic filler are prepared in a low-toxicity process. Desired mechanical behaviour is achieved using a combination of two cross-linking routes—dynamic Schiff base linkages and ionic cross-linking. We found that gelation time is greatly affected by polymer chain conformation. This factor can surpass the influence of the number of reactive sites, shortening gelation from 5 h to 20 min. Ionic cross-linking efficiency increased with the number of carboxyl groups and led to the storage modulus reaching 10 [Formula: see text] Pa compared to 10 [Formula: see text] Pa–10 [Formula: see text] Pa for gels cross-linked with only Schiff bases. Furthermore, the ability of magnetic particles to induce significant stiffening of the hydrogel through the magnetorheological effect is confirmed, as a 10 [Formula: see text]-times higher storage modulus is achieved in an external magnetic field of 842 kA·m [Formula: see text]. Finally, cytotoxicity testing confirms the ability to produce hydrogels that provide over 75% relative cell viability. Therefore, dual cross-linked hyaluronan-based magneto-responsive hydrogels present a potential material for on-demand mechanically tunable scaffolds usable in myocyte cultivation. MDPI 2022-08-25 /pmc/articles/PMC9455683/ /pubmed/36077030 http://dx.doi.org/10.3390/ijms23179633 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Vítková, Lenka
Musilová, Lenka
Achbergerová, Eva
Kolařík, Roman
Mrlík, Miroslav
Korpasová, Kateřina
Mahelová, Leona
Capáková, Zdenka
Mráček, Aleš
Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title_full Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title_fullStr Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title_full_unstemmed Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title_short Formulation of Magneto-Responsive Hydrogels from Dually Cross-Linked Polysaccharides: Synthesis, Tuning and Evaluation of Rheological Properties
title_sort formulation of magneto-responsive hydrogels from dually cross-linked polysaccharides: synthesis, tuning and evaluation of rheological properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9455683/
https://www.ncbi.nlm.nih.gov/pubmed/36077030
http://dx.doi.org/10.3390/ijms23179633
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